<template>
  <div class="login_body">
    <div class="bg"></div>
    <div class="box">
      <div class="title">智慧园区-登录</div>
      <!-- 表单校验四要素 -->
      <!-- 1. el-form :model 对应的值 是表单对应的数据对象 -->
      <!-- 2. el-form :rules 对应着 校验规则 -->
      <!-- 3. el-form-item prop 表示要校验哪个字段 -->
      <!-- 4. 表单元素（el-form el-checkbox ...） v-model  -->
      <el-form ref="form" :model="loginForm" :rules="rules">
        <el-form-item label="账号" prop="username">
          <el-input placeholder="请输入账号" v-model="loginForm.username" />
        </el-form-item>

        <el-form-item label="密码" prop="password">
          <el-input placeholder="请输入密码" v-model="loginForm.password" show-password />
        </el-form-item>

        <el-form-item prop="remember">
          <el-checkbox v-model="rememberMe">记住我</el-checkbox>
        </el-form-item>

        <el-form-item>
          <el-button type="primary" class="login_btn" @click="handleLogin">登录</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
  import { FORM_KEY } from '@/constants/KEY'
  export default {
    name: 'Login',
    data() {
      return {
        loginForm: {
          username: '',
          password: '',
        },
        rememberMe: false,
        rules: {
          username: [
            { required: true, message: '用户名必须填写！', trigger: 'blur' },
            // { min: 0, max: 15, message: '长度在 0 到 15 个字符', trigger: 'blur' }
          ],
          password: [
            { required: true, message: '密码必须填写！', trigger: 'blur' },
          ]
        }
      }
    },
    created() {
      const loginData = localStorage.getItem('form_key')
      // 先判断 有没有存储用户信息
      if (loginData) {
        const { username, password } = JSON.parse(loginData)
        this.loginForm.username = username
        this.loginForm.password = password
      }
    },
    methods: {
      handleLogin() {
        // this.$refs['form']
        this.$refs.form.validate(async (flag) => {
          if (!flag) return
          await this.$store.dispatch('user/loginAction', this.loginForm)
          // 判断用户是否点击了记住密码
          if (this.rememberMe) {
            localStorage.setItem(FORM_KEY, JSON.stringify(this.loginForm))
          } else {
            localStorage.removeItem(FORM_KEY)
          }
          // 实现哪个页面退出的，登录时继续跳转到对应页面
          if (this.$route.query.redirect) {
            this.$router.push(this.$route.query.redirect)
          } else {
            this.$router.push('/')
          }
        })
      }
    }
  }

</script>

<style scoped lang="scss">
  .login_body {
    display: flex;
  }
  .bg {
    width: 60vw;
    height: 100vh;
    background: url('~@/assets/login-bg.svg') no-repeat;
    background-position: right top;
    background-size: cover;
  }

  .box {
    margin: 200px 10% 0;
    flex: 1;

    .title {
      padding-bottom: 76px;
      font-size: 26px;
      font-weight: 500;
      color: #1e2023;
    }
    ::v-deep() {
      .ant-form-item {
        display: flex;
        margin-bottom: 62px;
        flex-direction: column;
      }
      .ant-form-item-label label {
        font-size: 16px;
        color: #8b929d;
      }
      .ant-input,
      .ant-input-password {
        border-radius: 8px;
      }
    }
  }

  .login_btn {
    width: 100%;
  }
</style>
